Answer:
The correct answer is option (E) Federal regulations once prohibited developing television programs in conjunction with the marketing of toys, but such programs are.
Explanation:
Letter A is incorrect because the relative clause <em>which</em> makes the sentence confusing.
B is also incorrect because the verb at the end is singular while the subject is plural.
Option C is incorrect because <em>television programs</em> required for <em>thriving</em>.
Letter D is also incorrect because the subject <em>they</em> gives the sentence an ambiguous meaning.
Option E is the correct answer because the connectors and verbs are used properly.
Answer:
valid means it good and invalid means bad
Answer:
In the medieval period, the earliest plays were liturgical dramas, a part of the public religious worship, and performed in churches by clergy. As the guild system developed, it took over theatre performance, producing elaborate cycles of mystery plays that involved many people and took days to perform.
BRAINLIEST